Internal-combustion engine



H. MANRODT.

INTERNAL COMBUSTiON ENGINE.

APPLICATION FLLED OCT-25. 1915.

1,332,850. I Patented Mar.2,1920.

3 SHEETS-SHEET I- H. MANRODT.

INTERNAL COMBUSTION. ENGINE.

APPLICATION FILED OCTI25| I915- Patented Mar. 2, 1920 3 SHEETS-SHEET 2.

H. MANRODT.

INTERNAL COMBUSTION ENGINE.

I 1 IIIIIIIIIIIIII' a All IIIIHIIIIITEI HENRY MANRODT, OF BROOKLYN, NEW YORK.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application filed October 25, 1915. Serial No. 57,658.

motors which operate without the common valves.

According to the present invention one or more cylinders are used; if a plurality of cylinders is employed they are preferably arranged in a circle. Centrally between the cylinders a rotary valve is provided by means of which the supply of combustible fuel is successively introduced into the explosive zone of each cylinder. This rotary valve preferably is conical and also serves for expelling the exhaust gases in a perfect manner. The rotary conical valve is rigidly secured to the valve shaft.

The conical center valve reaches into the heads of the cylinders and has its fuel inlet and exhaust channels at both sides of the valve body whereby inside and outside pressure is eliminated or rather equalized. This is one of the essential features of the present invention. By virtue of the present construction the conical center valve rotates with a reduced speed. Other improvements and novel features are attained by this invention to be described hereinafter with reference to the accompanying drawings in which:

Figure 1 represents in vertical central sec- I Similar characters of reference denote like parts in all the figures.

The conicahcenter valve reaches into an annular chamber formed in the top of the cylinders and is rotatable therein.

Four cylinders are illustrated in the drawings. Accordingly there are eight inlet and eight exhaust ports two of each in each cylinder. During a suction stroke the inlet ports coincide with the cylinders and upon further rotation the cylinders coincide with the exhaust ports. There are three inlet and three exhaust ports in the conical center valve, therefore this valve rotates with but *2; of the speed otherwise required which is a practical advantage.

In the drawings four cylinders, a, a a 0. are illustrated. These cylinders are vertically arranged as shown in Fig. 1. In each cylinder a plston is provided of which the pistons Z), 6 are shown. The pistons are provided with the usual piston rods 0, 0 These rods are connected to two crank shafts (Z, (P. The crank shafts are connected by chains or gears 0, c and the shaft (Z carries a fly wheel 7. This shaft is the principal crank shaft and if a larger number than four cylinders say six or more are arranged in a circle the provision of a corresponding number of crank shafts is required, for instance six cylinders require two auxiliary crank shafts. The pistons, piston rods and crank shafts are of usual form and operate in known manner. Each cylinder is provided with a spark plug g, g g g and other accessories required. The cylinders may have cooling ribs or may be provided with a water cooling device A, la The shafts and gears are located below the cylinders in a splash case c where they run in oil, as usual, any approved construction of a splash case arrangement may be employed. In fact these described parts are. all of known approved construction.

The present invention consists essentially in the following:

In the upper portion of theengine an annular chamber having walls j, 7' is formed which passes through the upper portions of the cylinders. This chamber is circular in shape and may be conical or cylindrical. In the drawings it is shown to be conical. Incisions 7c are formed in the inner wall of this chamber and incisions k opposite the incisions k are formed in the outer wall of'the same located in and communicating with the cylinder portions of said chamber. within the chamber. fits tightly and runs in oil.

It is ground in and The conlcal center valve is mounted upon the valve shaft m. It is. evident from the described construction that the engine does not require. the common valves. The fuel gases are introduced and the. exhaust gases expelledby means of the conical center valve.

which communicates with an annular channelo around the shaft m. and inlet ports p which. are open tothe said inlet channell 0 all the time, with .the carbureter. The conical center,

valve lhasin its top or cover exhaust ports. through which the combustion gases are expelled. The shaft m to which the conical .vcenter valve is attached is guided in bear-.

ingsr, r. The lower bearing .1" closes off the shaft completely air-tight. ingly the fresh fuel. gases pass throughthe inlet port n into the channel 0 which surrounds the shaft m from, all sides. From the channel 0; the fresh fuel gases pass through the ports p into the inner chamber.

Z of "theconical center valve 1. From the conical center valve the freshfuel gases pass throughthe ports 8 when saidports 8 coin:

aide with the ports is, E into the cylinderswherethey are ignited and combusted and move thepistons during the rotationof the saidconical' center valve. Upon further rotation of this valve communication is .established with the exhaust ports 2,, coinciding then with the ports lc, 7cthrough.which the combustion gases are expelled, passingjthe portgq into the channel 9} and. finally issue through the outlet u.

The lconiical' center valve may be provided with means for introducing and expelling the gases once or several times. In the draw ngs th s-arrangement is shown to be 3.

timesapplied to therotatable center valve. This presents the advantage that the parts exposed-to the explosion arje notjconstantly. subjected to the heat produced by the ex-' plosion butmay cool off again before they come again in contact with the explosion zone;= Further the conicalflcenter valve may,

rotate, under the described circumstances,

relatively slowly. If the inlet and exhaust devices are provided 3times, a s shown, then,

the valve rotates at a ratio of l'to 6 relative to thecrank shaft 0Z Theoperation of the present internalcombustion engine-is substantially as follows; The engine is startedjor primedin the usualjmanner, the pistons move up and downjand" the conical center valve rotates;

The conical center valve Z rotates.

Thefuel. gases are introduced through. the inlet. n-

The fuel inlet n communicates.

Accprd-' Duringthe rotation the openings 70 of each cylinder coincide successively with the exhaust ports while the pistons perform the upward stroke. Upon further rotation of the conical center. valve the inlet ports communicate with the cylinders and permit of the introduction of new fuel gases. During this period of time the pistons perform the downward. or suction stroke. Nowfifollows the compression of the fuel charge and its explosion. During this period of time the openings is of the chamberformed .ontopofthecylinders arecompletely closed by, the surrounding walls of the conical center valve rotating therein. Thus the essential novel features .ofwthe invention consist in, the form .and arrangement of the. center valve which. passes through the top portions of. the

cylinders within the chamber formed in that.

section. In thechamber there areuniformly large openings. When. the. exploe sion takes place the pressure created. is exerted upon the'wallsof. the 'center valve that is upon those parts of the said valve which, at

this moment close off the openings Icon both sides. Accordingly the same pressure exists on both sides of the valveinside and-outside and. therefore the valve is perfectly. balanced, the pressure isexerted in the dime:

tionltoward. the shaft and the. same pressure.

isexerted in the direction fromthis shaft.

Inthe described manner. any undue vibration andione sided load. or. pressure upon the shaft m is avoided. This is of great importance for a uniformrunning of the engine.

and a'perfectly tight closure of'all parts, at all. times, is. assured. The. described construction. solves this important, question in the simplest, manner.

The shaft m-uponwhich the center valve is mounted maybe rotated by any approved. In.

means, by, chains, gears and the, like. order to hold the shaftlm in; the desired position screws '0. are. provided at. the ends.

of; the. shaft], or other approved; means may be. usedl' to keep. the shaft in position.

i I claimfas. my invention:

1'. In an internal combustion engine, a

series ofcylinders and a rotatable single.

valve-for. said cylinders,.said valve being in form. with, a. hollow, annular projectionarranged-parallel to. its axis .of rotation and around the valve shaft, a conical annular chamber partly formed with the top portions of the cylinders in which the center valve rotates, ports in both sides of said center valve and cylinders coinciding successively during rotation, and exhaust ports in the top portions of the center valve, so arranged that during explosion equal pressure is exerted toward the and from the valve shaft.

4. An internal combustion engine co1nprising a rotatable center valve with shaft and fuel inlet ports at both sides of the valve body, cylinders arranged in a circle around the valve, an annular chamber partly formed with the top portions of the cylinders, an annular fuel channel formed around the shaft, and means for introducing fuel successively into the cylinders from both sides of said rotatable center valve, so that during the explosion equal pressure is exerted toward the and from the valve shaft.

An internal combustion engine comprising a rotatable center valve with shaft and fuel inlet ports at both sides of the valve body, cylinders arranged in a circle around the valve, an annual fuel channel formed around the shaft, exhaust ports in the cover of the valve, and means for introducing fuel successively into the cylinders from both sides of said rotatable center valve, so that during the explosion equal pressure is exerted toward the and from the valve shaft.

6. An internal combustion engine com prising a plurality of cylinders, inlet and exhaust ports therein, one rotary balanced center valve for all the cylinders having an annular circumferential extension, fuel inlet and exhaust ports in said valve, and walls of the said valve adapted to close the inlet and exhaust ports of the cylinders during the compression and explosion stroke, so arranged that the pressure is exerted in opposite directions against the valve which thereby is perfectly balanced.

7. In an internal combustion engine, a plurality of open topped cylinders formed at their upper portion with an annular chamber, a single central valve for said cylinders formed with a hollow marginal annular projection arranged parallel to its axis of rotation and borne in said annular chamber.

In an internal combustion engine, a plurality of open topped cylinders formed at their upper portion with an annular chamber extending circumferentially partly outside and partly inside of said cylinders and a single valve for said cylinders formed with a hollow annular projection arranged parallel to its axis of rotation and revolubly borne in said annular chamber.

9. I11 combination with cylinders of an engine or the like, having ports, a rotatable valve for said cylinders centrally supported and having an annular marginal projection and ports, said projection being arranged parallel to its axis of rotation and an annular chamber connected with said cylinders, said marginal projection extending into and capable of revolving in said annular chamber and the ports of said cylinder being adapted to successively coincide with the ports of said valve and to be alternately closed ofli' by the walls of said valve.

10. In an internal combustion engine, a plurality of open topped cylinders formed at their upper portion with an annular chamber and a single valve for said cylinders formed with a hollow annular projection arranged parallel to its axis of rotation and extending into the said chamber and capable of revolving therein to control the admission of fuel into the cylinders and the discharge of the combustion gases therefrom.

11. An internal combustion engine comprising a plurality of cylinders, a single rotary central valve for said cylinders having an annular hollowprojection, an annular chamber connected with said cylinders, said hollow projection extending into and capable of revolving in said chamber, said chamber having ports on both sides whereby pressure is exerted in opposite direction against said valve projection.

12. In an internal combustion engine, a plurality of cylinders, a rotatable central valve for said cylinders having a marginal annular hollow projection, an annular chamber connected with said cylinders and having ports in its inner and outer walls, said hollow projection also having ports and extending into and capable of revolving in said annular chamber, the ports of said chamber being adapted, during the operation, to alternately coincide with the ports in the said valve pro jec-tion and to be closed off by the walls of the said projection whereby pressure is exerted in opposite directions against the said valve projection.

13. A single valve for a series of cylinders comprising an annular chamber connected with the entire series of cylinders, a rotary body formed with an annular marginal proj ection arranged parallel to its axis of rotation and extending into and capable of revolving in said chamber.

14:. A single valve for a series of cylinders comprising an annular chamber connected with the entire series of cylinders and having ports in its inner and outer walls, a rotary body having a marginal annular projection arranged parallel to its axis of rotation and extending into and capable of revolving in said annular chamber and having ports adapted, during the operation, to alternately coincide with those of the said annular chamber.

15. In an internal combustion engine, a series of open topped cylinders arranged in a circle,- an annularehamber connected 'with and th'e successive (liselfarge'of' the;combus-.

the entire series of saicl cylindersand a ti0n r.eharges therefrom; 10 single valve for said cylinders formed with a slgnedat'a NQiWVYOI'lt, N. Y., this22nd: day hollow! annular projecti'on' arranged parallel of October, .1915;- l

to its axis of rotation and'extending"into :and HENRY MANRODT; capable of'revolvingx in; said; annular cham- Witnesses: ber, andaclapted to control the -successivesad* HERMANJ; RUBENSTEIN;

missiom of fuel into the" different cylinders. LrnLEYr SCHMIDT. 

